Program features 143Custom U/f ratioThe user can define a U/f curve (output voltage as a function of frequency). Thiscustom ratio is used only in special applications where linear and squared U/f ratioare not sufficient (eg, when motor break-away torque needs to be boosted).Note: The U/f curve can be used in scalar control only, ie, when 9904 MOTOR CTRLMODE setting is SCALAR: FREQ.Note: The voltage and the frequency points of the U/f curve must fulfill the followingrequirements:2610 < 2612 < 2614 < 2616 < 2618 and2611 < 2613 < 2615 < 2617 < 9907WARNING! High voltage at low frequencies may result in poor performance ormotor damage (overheating). Settings DiagnosticsParameter Additional information2605 Custom U/f ratio activation2610…2618 Custom U/f ratio settingsFault Additional informationPAR USER U/F Incorrect U/f ratiof (Hz)Custom U/f ratioVoltage (V)Par. 2618Par. 2616Par. 2614Par. 2612Par. 2610Par. 2603Par. 2611 Par. 2613 Par. 2615 Par. 2617 Par. 9907
